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SUNMAG: Understanding magnetic-field-regulated heating and explosive events in the solar chromosphere

Total Cost €


EC-Contrib. €






Project "SUNMAG" data sheet

The following table provides information about the project.


Organization address
postcode: 10691

contact info
title: n.a.
name: n.a.
surname: n.a.
function: n.a.
email: n.a.
telephone: n.a.
fax: n.a.

 Coordinator Country Sweden [SE]
 Project website
 Total cost 1˙491˙966 €
 EC max contribution 1˙491˙966 € (100%)
 Programme 1. H2020-EU.1.1. (EXCELLENT SCIENCE - European Research Council (ERC))
 Code Call ERC-2017-STG
 Funding Scheme ERC-STG
 Starting year 2018
 Duration (year-month-day) from 2018-01-01   to  2022-12-31


Take a look of project's partnership.

# participants  country  role  EC contrib. [€] 
1    STOCKHOLMS UNIVERSITET SE (STOCKHOLM) coordinator 1˙491˙966.00


 Project objective

This project represents a new powerful approach to a fundamental problem in solar physics: the heating of the solar chromosphere. The aim of SUNMAG is to identify the mechanisms that heat the chromosphere and characterize the energy flux that is being released into the outer layers of the Sun in active regions and flares. By investigating how the chromosphere regulates the energy and mass transport we can also contribute to an understanding of the heating of the corona and the acceleration of the solar wind. These goals are finally within reach thanks to the recent developments of numerical simulations and analysis codes for observations and, observationally, thanks to the very recent development of a new powerful instrument for imaging spectroscopy (CHROMIS) that allows to study the upper chromosphere at the highest possible spatial resolution.

Chromospheric observations show that energy must be released at very small spatial scales (smaller than 100 km), and therefore, the intricate fine structuring of the magnetized chromosphere is the key to understand the heating and the mass loading of the outer atmosphere. The CHROMIS instrument at the Swedish 1m Solar Telescope (SST) is the only instrument in the world that allows observing the upper chromosphere at this spatial resolution, and rich spectral resolution. SUNMAG shall use observations from this instrument and a space-borne solar telescope (NASA's Interface Region Imaging Spectrograph, IRIS) to reconstruct time-dependent 3D empirical models of the solar chromosphere. I will use these models to characterize the spatio-temporal distribution of heating in the chromosphere of active regions and flares, and to investigate to what extent this heating can be related to the observed (changes in) the physical parameters. These results will be confronted with predictions from the foremost theoretical models to propose what physical mechanisms are most likely providing the required energy deposition.


year authors and title journal last update
List of publications.
2019 A. Asensio Ramos, C. J. Díaz Baso
Stokes inversion based on convolutional neural networks
published pages: A102, ISSN: 0004-6361, DOI: 10.1051/0004-6361/201935628
Astronomy & Astrophysics 626 2019-08-29
2018 A. Asensio Ramos, J. de la Cruz Rodríguez, A. Pastor Yabar
Real-time, multiframe, blind deconvolution of solar images
published pages: A73, ISSN: 0004-6361, DOI: 10.1051/0004-6361/201833648
Astronomy & Astrophysics 620 2019-08-29
2019 C. J. Díaz Baso, J. de la Cruz Rodríguez, S. Danilovic
Solar image denoising with convolutional neural networks
published pages: , ISSN: 0004-6361, DOI: 10.1051/0004-6361/201936069
Astronomy & Astrophysics in press 2019-08-29
2019 Tine Libbrecht, Jaime de la Cruz Rodríguez, Sanja Danilovic, Jorrit Leenaarts, Hiva Pazira
Chromospheric condensations and magnetic field in a C3.6-class flare studied via He I D 3 spectro-polarimetry
published pages: A35, ISSN: 0004-6361, DOI: 10.1051/0004-6361/201833610
Astronomy & Astrophysics 621 2019-08-29
2019 J. de la Cruz Rodríguez, J. Leenaarts, S. Danilovic, H. Uitenbroek
STiC: A multiatom non-LTE PRD inversion code for full-Stokes solar observations
published pages: A74, ISSN: 0004-6361, DOI: 10.1051/0004-6361/201834464
Astronomy & Astrophysics 623 2019-08-29
2019 C Quintero Noda, H Iijima, Y Katsukawa, T Shimizu, M Carlsson, J de la Cruz Rodríguez, B Ruiz Cobo, D Orozco Suárez, T Oba, T Anan, M Kubo, Y Kawabata, K Ichimoto, Y Suematsu
Chromospheric polarimetry through multiline observations of the 850 nm spectral region III: Chromospheric jets driven by twisted magnetic fields
published pages: 4203-4215, ISSN: 0035-8711, DOI: 10.1093/mnras/stz1124
Monthly Notices of the Royal Astronomical Society 486/3 2019-08-29
2019 J. P. Bjørgen, J. Leenaarts, M. Rempel, M. C. M. Cheung, S. Danilovic, J. de la Cruz Rodríguez, A. V. Sukhorukov
Three-dimensional modeling of chromospheric spectral lines in a simulated active region
published pages: , ISSN: 0004-6361, DOI: 10.1051/0004-6361/201834919
Astronomy & Astrophysics in press 2019-08-29
2018 Jayant Joshi, Jaime de la Cruz Rodríguez
Magnetic field variations associated with umbral flashes and penumbral waves
published pages: A63, ISSN: 0004-6361, DOI: 10.1051/0004-6361/201832955
Astronomy & Astrophysics 619 2019-08-29
2018 M. Gošić, J. de la Cruz Rodríguez, B. De Pontieu, L. R. Bellot Rubio, M. Carlsson, S. Esteban Pozuelo, A. Ortiz, V. Polito
Chromospheric Heating due to Cancellation of Quiet Sun Internetwork Fields
published pages: 48, ISSN: 1538-4357, DOI: 10.3847/1538-4357/aab1f0
The Astrophysical Journal 857/1 2019-08-29
2019 Alberto Sainz Dalda, Jaime de la Cruz Rodríguez, Bart De Pontieu, Milan Gošić
Recovering Thermodynamics from Spectral Profiles observed by IRIS : A Machine and Deep Learning Approach
published pages: L18, ISSN: 2041-8213, DOI: 10.3847/2041-8213/ab15d9
The Astrophysical Journal 875/2 2019-08-29
2018 J. M. da Silva Santos, J. de la Cruz Rodríguez, J. Leenaarts
Temperature constraints from inversions of synthetic solar optical, UV, and radio spectra
published pages: A124, ISSN: 0004-6361, DOI: 10.1051/0004-6361/201833664
Astronomy & Astrophysics 620 2019-08-29
2018 D. Kuridze, V. M. J. Henriques, M. Mathioudakis, L. Rouppe van der Voort, J. de la Cruz Rodríguez, M. Carlsson
Spectropolarimetric Inversions of the Ca ii 8542 â„« Line in an M-class Solar Flare
published pages: 10, ISSN: 1538-4357, DOI: 10.3847/1538-4357/aac26d
The Astrophysical Journal 860/1 2019-08-29
2019 G. J. M. Vissers, J. de la Cruz Rodríguez, T. Libbrecht, L. H. M. Rouppe van der Voort, G. B. Scharmer, M. Carlsson
Dissecting bombs and bursts: non-LTE inversions of low-atmosphere reconnection in SST and IRIS observations
published pages: A101, ISSN: 0004-6361, DOI: 10.1051/0004-6361/201833560
Astronomy & Astrophysics 627 2019-08-29
2019 S. Esteban Pozuelo, J. de la Cruz Rodríguez, A. Drews, L. Rouppe van der Voort, G. B. Scharmer, M. Carlsson
Observationally Based Models of Penumbral Microjets
published pages: 88, ISSN: 1538-4357, DOI: 10.3847/1538-4357/aaf28a
The Astrophysical Journal 870/2 2019-08-29
2019 C. J. Díaz Baso, M. J. Martínez González, A. Asensio Ramos, J. de la Cruz Rodríguez
Diagnostic potential of the Ca II 8542 Å line for solar filaments
published pages: A178, ISSN: 0004-6361, DOI: 10.1051/0004-6361/201834793
Astronomy & Astrophysics 623 2019-08-29
2019 D. Buehler, S. Esteban Pozuelo, J. de la Cruz Rodriguez, G. B. Scharmer
The Dark Side of Penumbral Microjets: Observations in H α
published pages: 47, ISSN: 1538-4357, DOI: 10.3847/1538-4357/ab125b
The Astrophysical Journal 876/1 2019-08-29
2019 Carolina Robustini, Sara Esteban Pozuelo, Jorrit Leenaarts, Jaime de la Cruz Rodríguez
Chromospheric observations and magnetic configuration of a supergranular structure
published pages: A1, ISSN: 0004-6361, DOI: 10.1051/0004-6361/201833246
Astronomy & Astrophysics 621 2019-08-29

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